How to change product price with Plugin in Magento 2

Using a plugin to change the product price in Magento 2 is one of the great alternative choices when you start with Magento 2 store, and have a tendency to change something like product price. As normally, there are many ways to modify the product price, maybe you know that you will use the Event - Observe or “Rewrite” if the “Event” is not supported at that time. However, the Rewrite doesn’t accept the customization from two modules in the same file, that will cause the conflict and you can’t change anything.

Coming with Magento 2 tutorial, this article will demonstrate how to change the product price with plugin via the steps.

Overview of changing product price with plugin in Magento 2 in three easy-to-follow steps

Follow this guide and make your life easier when it comes to changing prices of any products you want in the future.

Let’s dive in!

Step 1: Add di.xml file

It is crucial to identify where the place you want to activate the plugin, and then add di.xml file. Here, the sample is the frontend area with the following content for the di.xml file.

<config>
  <type name="Magento\Catalog\Model\Product">
    <plugin name="change_product" type=" Mageplaza\HelloWorld\Plugin\Product " sortOrder="1" disabled="true"/>
  </type>
</config>

Step 2: Change the product price

Open folder “Mageplaza\HelloWorld\Plugin” to add new class Product.php. Please put the prefix “after” before one of two ways to change the product price:

  • Edit the values reported by an original method
  • Call some behaviors once an original method is called.

And the result when the original method getPrice() finishes is declared by the $result. For example, you will adjust the product price by multiply it with 2.

<?php
 
namespace Mageplaza\HelloWorld\Plugin;
 
class Product
{
    public function afterGetPrice(\Magento\Catalog\Model\Product $subject, $result)
    {
        return $result + 100;
    }
}

When step 2 has done, this means you can see the customization of the product price on the frontend. Hope you find it useful within running Magento 2 store.

Step 3: Flush Cache and Test

Flush cache and test the result

Final words

That’s all you need to do to change product price in Magento 2. Run the above code and you will get the result. By integrating Magento 2 plugin, it will be easier to customize the product price and you will not have to encounter any limitations of the Magento Default.

I hope you find this tutorial helpful. Thanks for reading!

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Vinh Jacker
With over a decade of experience crafting innovative tech solutions for ecommerce businesses built on Magento, Jacker is the mastermind behind our secure and well-functioned extensions. With his expertise in building user-friendly interfaces and robust back-end systems, Mageplaza was able to deliver exceptional Magento solutions and services for over 122K+ customers around the world.
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